High-resolution spectroscopic observations around the
Hα line and BVRI photometry of the eclipsing
short-period RS CVn star WY Cnc are presented. The solutions of
our radial velocity curves and light curves yielded the following
values for masses and radii of the components: , , , . The measured rotational
broadenings of the spectral lines correspond to equatorial
velocities km s-1 and km s-1. The
distortions of our multicolor light curve of WY Cnc were
reproduced by two cool spots on the primary star. An increase of
the out-of-eclipse brightness by 0.1 mag in February 2001 was
detected. Our spectra show Hα line in emission from the
secondary star. The chromospheric activity appeared also in the
observed emission cores of the CaII H and K lines as well as the
CaI 6494 line.

Based on spectral observations collected at the National Astronomical Observatory at Rozhen, research was supported in part by the NATO Linkage grant No. PST.CLG.978810 and grant No. 1/2002 of the Shoumen University

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